Mixing-machine.



P. A. KOEHRING.

Patented Feb. 15, 1910.

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P. A. KOBHRING.

Mime@ MACHINE.

APPLIGATIQX IILED AUG. 30. 1906.

Patented Feb. 15, 1910.

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P. A. KOEHRING.

MIXING MACHHIB.

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Patented Feb. 1.5, 1910.

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APPLICATO ULEB AUG. 30. l.

- Patented Feb. 15, 1910.

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P. KOEHRNGY HIKING MACHINE.

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Patented Feb. 15, 1910.

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i /7 Y mi PHILIP A. KOEH-RING, OF WAUVIATOSA, WISCONSIN.

:MIXING-MACHINE.

Specification of Letters Patent.

Patented Ech. 15, 1910.

applicati@ med August so, 190e. serial Na. 332,590.

To all vwzom 'it may concern:

Bc if known that, LPmmr A. Kommune,

accompanying drawings, which are a part of this specification.

intended for mixing concrete, or other commortar, and the like.

provide an improved construction of mapability of performing a most. thorough mixing operation, the improvements relating particularly to the novel construction i for etectmg the mixing operation, and for the feeding of the different materials to be mixed.

With the above primary object, and other incidental objects,` 1n view the invention consists in the devices and parts, or the e uivalents thereof, as hereinafter more ful y set forth and claimed.

ln the accompanying drawings, Figure 1 is a lan view of the com lete machine; Fig. 2 is a side elevation of ig. 1; Fi 3 is a cross section on the line 3-3 of iig. i; Fig. 4 is a transverse section of the machine on a plane through the mixing receptacle or drum, and allied parts; Fig. 5 is a transverse section of the mixing receptacle, also showing in section a fragment of the conveyer, and the water supply piping thereabove, one of the tubes of said piping being broken away; and, Fig. 6 is a side elevation of the ho per for feeding the sand and cement to tie receptacle.

Referring to the drawings, the numeral 7 indicates a truck mounted on Wheels 8. At one end of this truck is located an engine 9, adapted to drive a short shaft 10. On one end of this short r`haft. is asprockc'r wheel 11 around which sprocket chain l? passes, said chain also assing around another s rocket wheel 13 on a shaft 14. This latter siiaft carries on its outer end a sprocket wheel 15 ao'und which a sprocket chain 16 passes, said chain also passing around a around s rocket wheel 17 on the outer end of a. longl s aft 18. Shaft 18 carries a pinion 19wh1c end of a mixing receptacle or`drum 21.

i The mixing receptacle 21 is constructed in residing in H'YaunatOsa, in the county ot" Milwaukee and State of W'isconsin. have' invented nen' and useful Improvements in' Mixinglvachines, of which the foliowing. is a description, reference being had to the the peculiar manner illustrated most clearly in Figs. el and 5, that is to say, it is composed of tivo end or head pieces, and a rim wound in theform of a spiral, the outer wall of said spiral being indicated by the numeral I 22, the next innermost wall by the numeral Q 23, the next wall by the numeral 2J., and the hij; invention has relation to impr ve, ments in mixingmachines, more especially continuous spiral passage the sub-divisions thereof being indicated by the numerals 26, pounds 1n paving materials, or for mixing 2T, 28 and :19, and cach successive sub-dig vision being of gradually diminishing cir- The primary object of the invention is to 1 cumfcrence. The innermostvvall 25 terminates in a laterally extending funnel' 30 chine of the above character having the vcacurves inwardly to forni the spiral. an opening 32 is necessarily formed which. serves as the changing opening for the receptacle.

The funnel 2.30 is adapted to discharge into a double trough 334 for a' double conveyor, said conveyer consisting of two shafts 534-34 having blades 3.3-3.3 radiating, respectively,therefrom. 'l` e conveyer shafts may berotated in any lesirable manner,

and in the drawings I have shown for the purpose a sprocket wheel 36 mounted on shaft 18, and around which wheel passes a sprocket chain 37, said` chain being extended to and passed arounda sprocket wheel 3S on oncof the conveyer shafts. In this manner rotation is imparted to one of said shafts, and this rotation is imparted to the other shaft, by means of iutermeshing gears 39 and 40 mounted on the respective shafts.

The numeral 41 indicates a casing for an elevator, said elevator consisting of unendless sprocket chain 4'2 provided with projectin upper and lower sprocket wheels 3 and 44 mounted, respectively, on shafts 5 and 4G. The elevator may be driven in meshes with an annular rack Q0 around one any desirable manner, and as a convenientJ los llt)

Vabove the shaft 5S is another shaft t2() hav vlng a series of stirrer lingers 61 radiatmgg .tions` one section being a hinge section in- Q l A 948,99@

means for driving, I provide a sproekety chain 47 which passes around a sprocket i, wheel 4S on shaft 18, and around another sprocket wheel 4f) on the shaft 4t?. (.)ne side of the elevator easing or housingl is open, as indicated by the nunieral't), and extending from said side of the easing and leading to the inlet, openingr is a feeding' hopper 5l. The elevator easing is also provided with another .smaller opening fr. at its lower end and ou the side thereof op- 1 pos-ite to the side to u'hirh the inlet opeuing is located. This opening 52 permits any l dirt which may settle in the lower portion of the easing to he discharged or removed from .said casino. Crushed stone. or gravel is adapted to he fed into the hopper 5l. and i this stone is lifted hy the inclined hiatles 42 i of the elevator. and dist-harged from Saldi hlatles and through a dist-havre opening 58 in the elevator easing, whit-h lL-charge openi ing is. loeateti directly above the ilonhlo!f troatjl: 33 of the eonveyer. t

For feeding sand and rement to the tuixing receptacle il, l provide on one sith of g the machine. a hoppHr fil which is suhrivitled l hyaneans of a partition 5.3 into tiro eomi pariments 5o and 5T; respectively, one of; said compartments, :is for instance eonipnrtment 5G, adapted lo have. sand depositi-di therein, and the other compartment 5i' 5 adapted to have cement deposited therein, l lu the loire-r portion of the hopper is al shaft 58 provided with a series of divided feeding blades 59, and also in the hopper therefrom. On corresponding' outer ends of shafts :3o and (i0 are mounted .spi-what wheels 62 and (33 respectively. said wheels I being connected by means of a sprorlnrt' ehr-iin (il. The shaft also has a lis-l; (i3 mounted thereon, said disk being loeatet'l ou the shaft outside of the ho iper, and being provided with a series o' pins tto. These rains are adapted to be successively engaged by a linger G7 pro'ecting from the mixing receptacle 21, one oi said pins being struck on each complete revolution of the. mixing receptacle. whereby a quarter turn, is given to the disk 65, and eonseqitentlj7 a partial rotation also given to the stirrer shaft 6G, hy reason of the spreeket chain connection 64.

AboveV the inner end of the eonteyer trough 33, and parallel with the two con- 'veyer shafts 134-434, are two tubes (iS- 68, which are connected to 5nd fed with water from a. common Water supply pipe 69 lead` ing from any suitable source of water supply.

I Dreier that one of' the end or head pieces of the mixing receptacle consist of two seedicated by the-numeral it), and forming a door, which when turned outwardly on its hinges will give free access to the interior o the reeeptaele for- Cleaning: purposes. lfhen the rereptaeie is in use. the door of course is' clos-rtl. :mtl is releafahlj; secured in its closed position h r any desirable means. as for instaure hy the provision of bolts 7l. haringr their outer ends threaded to receive winged nuts TL'.

'lu the opi-ration of the untel-tine. the enment in it` natural lry .state ar-x ietl into the hopper Si. the mi.\zin; r reeet-taele completes its tirs! revolution. theY ontatt til'V strikes one ot' the pin's (Sti of the lisli (i5. and fires .saiai tlisl: a quarter turn. thereby rausin;r the leerling hiaths 5U to tor-"e a qumtity of the materiau through the rharging opening: l'. and into the mixin; r receptacle. At tlu` .same time the partial rotation is thus given to the leerling derive. the stirring tit-- riet' is' also ,Q'ifeu a partial rotation. :ttul the l lingers Voi' salti .stirringr lerne are thereby Caused to art upon the lnateriah in the upper portion ot the hopper. :mel lr" up ami separate .saitl materials into .smal naps or pal'- liths. tlnrt'tiif! avoiding :illy thmgt't nl elw"- ging. The .sand anti rement thu A successive v deposited in the mixing rnreptaole are caused la' the revolt-ing ot' the rereptarle to tatie the i rireuitous route formed 'o f the continuons spiral p-.xssage .ft, 2T, 2H and 'SL and the ingredientsare therelrv t-ausetl to l:-. thoroughly mixed. The mixinrr blades 3l, of course, rome in contact with the materials during their travel in the passage. and materially assist in the mixin; r operation. When the materials .so mixed reach the terminus )9 of the par. ige. they lli-eure travel outwardly laterallv in the funnel 30. anti are dist-hargeti from ,said funnel into the double trough 13. The erushed stones. as heretofore .stated` are also deposited into this trough through the oper-.inif 53 of'the elevator casing 4t. The santi anti vement. together with the erushetl stone. are. by tinl action of the conveyor blades 3.3, caused to travel longitudinally through the trough 33. Il will he Tanderstootl that in my invention it is contemplated that the sand and cement should he deposited in the mixing receptacle in their natural dry state and mixed in said reeeptaele in a dry rondition. ltis therefore necessary, before the final mixing operation. that water should he fed to and mixed with the muterials -to be mixed, and in my arrangement I feed this water to the initial end of the guunivelniuism heilig started. .santi and 1e double conueyer trough through the tne- 94eme charge opening 73, into a suitable reeeptaele i located below said discharge opening.

l not onlyv provide mixingr bladesv or wings 31 in the i'tteptaele for iiiixiuj.; the aand :nid Cement in its course through the spiral pas- Sage of the receptacle, but l also prefer to surfaces 73.

from the inner side of different points of the spirally formed wall.y and inears t'or iotilting:r the iiiixinj?r ieeeptaele.

Q. ln :i mixing,r machine, the eoinbinaiion with zi mixing: reeepaele eonipesed of end oi' head piet-es and a riin between the end pieve-s wound in the i'orni of a spiral, :i .fpeninzer being formed in the peripher at a point beyend the initial end otx the lspiral. and the terminal end of Said spiral leading to and ref iisteringg,v with :t funnel-shaped inetlially positioned and laterallyprojeeting passage extending' through one of the end j provide, in addition thereto, nielined mixing These surfaees extend inwardly on inclined planes from the oppositeends oi' heads of the i'eeeptaele. as clearly shown in Figs. t and 5.

It is obvious that the said inclined surfaces very materially as-i t in the mixing ot' the sand and cenunt in their' travel through the reeei'itaele, causing theI ingredients to he thrown from side to side 1 of the ref'eptat'le.

Attention is called to the fae that the ri'iished stone oi' gravel hopper (it is so ari disk iiioiinted thereon. Said dise.

ranged that only a certain or measured qiiantity of the @rushed stone or `f imrel i`v fed to the mixing trough l by the liftingr blades eenzent. and lient-e :1 'predetermined quantity the sand and eenient is always :inxed with a pf'edrterinined qiiantiti of it. crushed Stone oi gravel. that the .sand and rement is fed into the inix- This is important. inasmuch as the,

lt will he further noted i in;v ref-eptaeie in separare bait-hes. one "fateli i heine' 'l'ed into .said receptacle 'spoil the eoni- K pletion of eaeh revolution of the reeeptaele.

ln eonseipienee of this.arrangeinteih there is o:il one bateli in a compartment at a time, Q but this batch iniist necessarily be most thoronghly niixetl. and after being discharged froni the reeeptaele. it is not ont)` mixed with the eiziished .stone or gra'el and the water in the trough .i.l.hut also mixed with the .siiej eeediiier luitehesV of inixed sand and cement. While l have herein shown and deserihed I :i .spiral mixing.r rereptarle of eireiilar forni. ret l donut wish to he understood as iesti'ioting in cself' speeitieally to the eireiilar forni. inasinneh as the receptacle ina) he of square,

hexagonal` or an)y other desired forni, lint lia'riiig the wall spirally trending.

what l elaiin as my invention is:

wound in the forni of a spiral. :t charging ope iig lainpr formed at a point beyond the initial end of the spiral. and the tei'ininal end of said spiral leading to and reefisterin;r with a discharee opentiiipr or passage through oneof the end mixing blades extending iis-ees of the receptacle, a; sei-ies of inclined pieees of the .ieeept:iele, the taper of said funnel increasing outwardly, of ineans for rotating the receptacle.

3. n a mixing inaehine, the eonibination of n rotatable mixing receptacle provided with charging and discharge openings, a hopper, a rotatable shaft in the lower portion of the hopper, and provided 'with a series of feeding blades. and abo haring,r a provided with a series of lateralhv- )rojeeting pins, e, shaft, in the hopper locate( above the lower shaft and havin(r a series of stirrer fingers projectingY tht-regioni, sprocket u h-elsont'orresponding ends of the respeetii'e shata, a Sprocket chain connecting said wheels. and :i Contact tinger extending fioin the receptacle at the point of location ot' the Charging opening of said reteptzu-le. the said contaet linee-i' adapte(l to eontaet with one of the pins o tion of the reeeptaele. whereby a iartial turn is given to the disk and its shait. and simultaneously a partial turn is given to the upper shaft.

4. ln a iiii.\'ing r niaeliine, the combination of a rotatahle mixing: i'eeeptfiele composed of end oi' head pieces. and e. riniht-tiveen the end pieee wound in the forni of :i eoniolute. a eliarging opening being formed :it a point beyond the initial end of thenconi'oliite, and the terminal end of said eenvolute leading to and registering with :.i (lis-A ehaijefe opening or passage in'iiugh one of the end pieces of the i'eeeptaele, a' hopper, and means eoaetinir with the receptacle, each time the reeeptael completes a revolution, for iiiteriniitently feeding n quantity of the materials` contained in the hopper through the f V-liarging opening of the receptacle.V

In :i mixing machine, the combination l of a rotatable mixing reeeptaele composed of l. ln a mixing inaehine. the eoinbination with a niixin;r reeeptacle eoinp'ised of end or L head pieees and a riin between the end piewes end or head pieces` and a rim between the end pieces wound in the form of spiral, n eliargin;r opening being formed aen point iveyond the initial end of the spiral, :n.11 the terminal end of said spiral leadiingr to and i'e risterin;r with :i laterallle-projecting disehurge 'passage extending through o'ne'of the end pieees of the receptacle, a Ccnvever trough into which said passage is adapted to discharge, said trough provided at. its outer the. disk on each eoinplete rerolte end with a discharge o ening, and rotatable shafts mounted longitu inally in the troughs, and having conveyer and mixing blades projectino' therefrom.

6. fn. a mixing machine, the combination of a rotatable mixing receptacle composed of end or head ieces and a rim between the end pieces wenn in the form of a spiral. a charg-V ing opening being formed at a point beyond the initial end of the spiral, and the terminal end o said s iral leadingto and registering with a latera y-pi'ojecti'ng discharge passage extending through one of the end pieces of the receptacle, a conreyer trough into which said passage is adapted to discharge. said trough provided at its outer end with a discharge opening, rotatahlet'shats mounted 'longitudinally in the trough, and having:

conveyer and mixing blades project ing therefrom, and an elevator for lifting and discharging crushed stone into the trough.

't'.rln a mixing machine. the combination of a rotatable mixing receptacle composed of end or head pieces and a rim between the end pieces wound in the formof a spiral. a charging opening being formed at a point.

beyond the initial c nd ot the spiral. and thtl g terminal end of said spiral leading to and registering with a laterally-projecting dis-e 36 charge passage extending through one of the end pieces of the receptacle, a con-rayer trough into which said passa e isadatitcg'i to discharge, said trough provi( ed 'at its outer end with a discharge opening, rotatable shafts mounted longitudinally in the trough and having conveyor and mixing blades prov jecting therefrom, an elevator for lifting and discharging crushed stone into the trough,

and means for supplying water to the trough.

8. In a mixing machine, the combination with a mixing receptacle having end or head t pieces and a connecting continuous convolute rim, of a series of inclined mixing surfaces extending inwardly from the opposite end or head pieces of the receptacle.

9. In a mixing machine, the combination with a mixing receptacle having endA or head pieces and a connecting eonvoliite riiu. a series of inclined mixing blades extending inwardly from different points of the convolnte rim. and a Series of inclined mixing .surfaces extending inwardly, from the opposite end or head pieces of the receptacle.

10. ln a mixing machine. the combination with a mixing receptacle compo-ed o end or head pieces and a rim between the end pieces wound in thc forni' of a convolute, a charging opening being formed at a point beyond the initial end of the convolute and the ierminal end of said convolute leading to and registering with a discharge opening or passage through one otheend pieces of the re ceptacie, a series of inclined mixing surfaces .,i M. ,.....v...... ..,.v........... M

extending inwardly from the opposite end or head pieces of the rece tacle, and means coacting with the reoeptac e for rotating the mixing receptacle.

11. In a mixing machine, the combination with a mixing receptacle composed of end or head pieces and a rim between-the end pieces wound in the form o a spiral, a charging opening being foi-ined at a point beyond the initial end of the spiral, and the terminal end of said .spiral leading to and registering with a discharge opening or pas- 3 Sage through one of the end pieces'of the receptacie, a` series of inclined mixing blades Kextending inwardly from different points a of the rim, a series of inclined mixing snri faces extending inwardly from the onposite end or head pieces of the receptacle. and means foi" rotating the receptacle.

12. ln a mixing machine, the combination of a mixing receptacle having end or head pieces and a connecting continuous convolute rim, charging and discharging openings, and a series of mixing surfaces extending inwardly from ditl'erent. points of the convolute rim.

13. ln a mixing machine, the combination g of a mixing receptacle having a convoliite lrim and provided with inlet and outlet openings, and adapted to mix materials in a dry istate. means for feeding materials to the inlet opening in the receptacle, means for rotating the receptacle and thereby inlx and convey the mixed materials to the outlet opening adjacentto the inner convolution of the convolute rim` means` for feeding i crushed stone with the mixed materials discharged from the mixing receptacle` means g for feeding water to the mixed materials, tand other means for mixing all of the materials together. 14. In a mixing machine, the combination i of a mixing receptacle having a convolute t rim and provided with inletand outlet open- Q ings. and adapted to mix materials inta dry istate, means for feeding materials to the 'l inlet opening in the rece tacle, Ameans for i rotating the receptacle an thereby mix and convey the mixed materials to'the outlet i opening adjacent to the inner convolution of the convolute riima trough .adapted to l receive the dry mixed materials discharged i from the mixing receptacle, means for feedf ing crushed stone into `the trough, means for lfeeding Water to the trough. and meansl i within the trough for mixing the dry mixed materials with the crushed stone and water and discharge the same therefrom.

In testimoniv whereof, I affix my signature, in presence of two witnesses.

PHILIP A. KOEHRING. Witn esses 

